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5.3 Thumpr

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Old 01-05-2010, 03:33 PM
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Default 5.3 Thumpr

http://www.youtube.com/watch?v=_aH5LDrB9Xo

1955 Chevy Belair 5.3 Carbed, Comp Thumpr Cam, Street and Performance headers with 2 1/2" Flowmaster 40's

Last edited by louisianagulf; 01-05-2010 at 04:04 PM.
Old 01-05-2010, 06:11 PM
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wow, that thumper thumps
Old 01-05-2010, 07:13 PM
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Yea, the sounds great. Lets see if I get the 96hp that comes with it. By the way mine looks good without the fuel injection on top
Old 01-06-2010, 12:44 AM
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damn, that joker sounds nice!
Old 01-06-2010, 10:20 AM
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What are the specs on that cam mans that sounds good!!!
Old 01-06-2010, 12:01 PM
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Comp Cam Thumpr. Spec sheet is at the house, Im at work....as always. I'll try and remember to post info when i get home, but I'm not promising anything. I'm sure their website has the info available.

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Old 01-07-2010, 09:11 AM
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Part # 54-600-11
Grind # LS1 275T HR-109 T Thumpr
Gross valve lift .554 in .537 ex
Dur. .006 Tappet lift 275 in 295 ex
Lobe seperation 109.0
Old 01-07-2010, 06:41 PM
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Thanks man great car!
Old 01-07-2010, 08:05 PM
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that cam is a 219/233 at .050
Old 01-09-2010, 10:41 PM
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Works for me.
Old 01-11-2010, 01:26 PM
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kool man, but does it run
Old 01-11-2010, 01:41 PM
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Gots some front end work to do before I put her back together.
Old 01-11-2010, 07:17 PM
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Gotta love those 55's
I bought the same cam for my 5.3 vega after hearing this video 219 233 on a 109
http://www.youtube.com/watch?v=VJh-KRENBm0
Old 01-11-2010, 10:46 PM
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Sounds nice, back a VERY long time ago in the early 70's i had a 55 with 402 BB in it. Was super nasty car on the street, ran down alot of Mopar 340's with that car.
Old 01-12-2010, 06:56 AM
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Did you put it in the Vega yet?
Old 01-12-2010, 09:05 AM
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Not installed yet, still gathering parts, need headers and carb.
Old 01-12-2010, 09:10 AM
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Default headers

Check "Street and Performance" for your headers
Old 01-12-2010, 07:18 PM
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It doesn't appear they offer anything that comes close, with the stock steering configuration of these cars
This is how tight it is with a buick 350 w/exhaust manifolds. A small block chevy has slightly more clearance. The LS motor will fit with stock exhaust manifolds from a buick ranier only, but I want headers. I've found manufactures that will make them, but the cost is a factor @ the moment. Here's a picture of a members car on H-body website of the ranier manifolds. I might go that route for a while
Attached Thumbnails 5.3 Thumpr-img_2239.jpg   5.3 Thumpr-dscn6246sm.jpg  

Last edited by 70GS/LQ4; 01-12-2010 at 07:24 PM.
Old 01-12-2010, 07:31 PM
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louisianagulf.......What size carb are you running
You running a gmpp or edelbrock mani?
Old 01-13-2010, 06:54 AM
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Edelbrock with a 650 Holley. I'll probably move up to a 750 but it all depends on my fuel consumsion. This is strickly a toy for me. I'm not into racing. Dont have the time and definatly not the money.


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